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Dr Geoffrey Dunn
Dr Geoffrey Dunn

Dr Geoffrey Dunn

Senior Lecturer

About

Biography

Head of physics. After his first degree in astrophysics, he obtained a PhD in Positron physics at London University in 1990. Since then he has developed an extensive suite of semiconductor device Monte Carlo simulation software and has researched into photodetectors, impact ionisation and Gunn oscillators working at Helsinki, Norwich, Sheffield and Loughborough Universities. Currently he is working to develop a planar Gunn diode technology for the generation of T-Rays (THz frequency radiation) and investigate novel cooling methods for semiconductor devices.

Publications

Page 4 of 5 Results 31 to 40 of 48

  • Gunn oscillations in planar heterostructure diodes

    Pilgrim, N. J., Khalid, A., Dunn, G. M., Cumming, D. R. S.
    Semiconductor Science and Technology, vol. 23, no. 7, 075013
    Contributions to Journals: Articles

  • Simulation of gallium nitride Gunn diodes at various doping levels and temperatures for frequencies up to 300 GHz by Monte Carlo simulation, and incorporating the effects of thermal heating

    Macpherson, R. F., Dunn, G. M., Pilgrim, N. J.
    Semiconductor Science and Technology, vol. 23, no. 5, 055005
    Contributions to Journals: Articles

  • Are Environmental Sources of Campylobacter Important for Human Infection? A CaMPS Study

    Strachan, N. J. C., Miller, G., Dunn, G. M., Reid, T., Ogden, I. D., Sproston, E. L., Gormley, F. J., Yiu, T. T., Forbes, K. J., Dallas, J. F., Sheppard, S. K., Maiden, M. C., Williams, A., MacRae, M., Rotariu, O.
    Zoonoses and Public Health, vol. 54, no. Supplement s1, pp. 40-40
    Contributions to Journals: Abstracts

  • Planar Gunn-type triode oscillator at 83 GHz

    Khalid, A., Dunn, G. M., Pilgrim, N. J., Stanley, C. R., Thayne, I. G., Holland, M., Cumming, D. R. S.
    Electronics Letters, vol. 43, no. 15, pp. 837-838
    Contributions to Journals: Articles

  • Double transit region Gunn diodes

    Lau, K. S., Tozer, R. C., David, J. P. R., Hopkinson, M., Rees, G. J., Carr, M., Priestley, N., Teoh, Y. P., Dunn, G. M.
    Semiconductor Science and Technology, vol. 22, no. 3, pp. 245-248
    Contributions to Journals: Articles

  • A Planar Gunn Diode Operating Above 100 GHz

    Khalid, A., Pilgrim, N. J., Dunn, G. M., Holland, M. C., Stanley, C. R., Thayne, I. G., Cumming, D. R. S.
    IEEE Electron Device Letters, vol. 28, no. 10, pp. 849-851
    Contributions to Journals: Articles

  • Escherichia coli O157: Burger bug or environmental pathogen?

    Strachan, N. J. C., Dunn, G. M., Locking, M. E., Reid, T. M., Ogden, I. D.
    International Journal of Food Microbiology, vol. 112, no. 2, pp. 129-137
    Contributions to Journals: Articles

  • Does age acquired immunity confer selective protection to common serotypes of Campylobacter jejuni?

    Miller, G., Dunn, G. M., Reid, T. M. S., Ogden, I. D., Strachan, N. J. C.
    BMC Infectious Diseases, vol. 5, 66
    Contributions to Journals: Articles

  • Monte Carlo simulations of asymmetry multiple transit region Gunn diodes

    Dunn, G. M., Teoh, Y. P., Priestley, N., Carr, M.
    Semiconductor Science and Technology, vol. 20, no. 5, pp. 418-422
    Contributions to Journals: Articles

  • A Novel Hybrid IMPATT-Gunn Device

    Teoh, Y. P., Dunn, G. M., MacKenzie, I. S., Priestley, N.
    Semiconductor Science and Technology, vol. 19, no. 7, pp. 885-889
    Contributions to Journals: Articles
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